/Engine/Source/Runtime/Engine/Classes/Materials/Material.h
Get the static permutation resource if the instance has one
virtual const [FMaterialResource](API\Runtime\Engine\FMaterialResource) * GetMaterialResource ( [ERHIFeatureLevel::Type](API\Runtime\RHI\ERHIFeatureLevel__Type) InFeatureLevel, [EMaterialQualityLevel::Type](API\Runtime\Engine\EMaterialQualityLevel__Type) QualityLevel ) const